JPH04327618A - Jet water supply device of stool - Google Patents

Abstract

PURPOSE:To prevent generation of noise during the time of washing by forming a branch channel upwardly from a water supply pipe above the sealing level of a stool, making the end of said branch channel open to the atmosphere and providing a back flow check valve. CONSTITUTION:A water supply pipe 10 for supplying jet washing water of a stool 1 is connected to a valve mechanism 11 for controlling the supply of jet washing water. Next, a channel is branched upwardly from the water supply pipe 10 above the level corresponding to the height of water seal of a bowl 3. Next, the end of said branch channel 12 is made open to the atmosphere and a back flow check valve 13 is provided at a location spaced a predetermined distance from the branched part. When the jet water supply is started, the air in the pipe 10 is guided to the side of the channel 12 to prevent the air from flowing toward the side of a jet hole 8 of a jet nozzle 7. As a result, the air is prevented from violently flowing out from the hole 8.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet water supply device for a toilet bowl equipped with a water conduit for supplying jet washing water.

0002

2. Description of the Related Art FIG. 3 is a sectional view of a toilet bowl equipped with a conventional jet water supply device. This jet water supply device for a toilet is equipped with a water conduit 101 for supplying jet washing water, and this water conduit 101 is connected to a valve mechanism 102 such as a two-way switching valve for supplying jet washing water. A vacuum breaker 103 is provided in the middle. Here, 1
00 indicates a toilet bowl. The vacuum breaker 103 is provided in the middle of the water conduit 101 in order to prevent water hammer due to negative pressure generated in the water conduit 101 when the valve mechanism 102 for jet cleaning water supply is closed, and to prevent water hammer from occurring due to negative pressure generated within the water conduit 101 and to prevent cleaning water from being supplied. When there is no air gap (hollow layer) 10 between the valve mechanism 102 and the water stored in the bowl part 104.
5 is provided to prevent accumulated water (sewage) from flowing into the primary side.

0003

[Problems to be Solved by the Invention] However, in the conventional jet water supply device for a toilet provided with such an air gap, the air in the air gap in the water conduit pipe is vigorously released from the jet outlet 106 when jet water supply starts. This caused noise. The present invention has been made to solve these problems, and its purpose is to provide a jet water supply device for a toilet that does not generate noise when jet water supply is started.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, a jet water supply device for a toilet according to the present invention branches a flow path from above near the toilet water sealing height of a water conduit, and this branch flow path is formed at an end. The section was open to the atmosphere, and a check valve was installed at a predetermined distance from the branch section.

[0005]

[Function] At the start of jet water supply, most of the air flows to the branch flow path side, and the air flows to the jet nozzle's jet nozzle 10.
There is no flow to the 6th side.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a toilet equipped with a jet water supply device according to the present invention, and FIG. 2 is an enlarged view of the jet water supply device of the toilet. In the figure, 1 is a siphon jet type toilet, and the toilet 1 has a bowl part 3 divided by a partition wall 2.
and a trap drainage channel 4. The trap drainage channel 4 connects an outflow port 6 opened at the rear lower part of the bowl part 3 and an inflow port 5 opened at the bottom surface of the approximately central part of the toilet bowl 1 by bending it into an approximately inverted U shape. A jet nozzle 7 is installed at the bottom of the bowl part 3 and a jet injection hole 8 is installed in the weir part 2 of the trap drainage channel 4.
1 and installed watertight.

The jet nozzle 7 is connected to a jet water supply device 9 . The jet water supply device 9 is disposed at the rear of the toilet bowl 1 and includes a jet water conduit 10, a valve mechanism 11 such as a two-way switching valve, a branch flow path 12, and a backflow prevention valve (vacuum breaker) 13. The valve mechanism 11 is an operating section 14
It is controlled by a control device 15 that is activated by an input. A water supply pipe 16 is connected to an inlet of the valve mechanism 11, and one outlet of the valve mechanism 11 is connected to a rim water supply chamber 18 communicating with a rim water passage 17. The other outlet is connected to one end of the jet water conduit 10, and the other end of the jet water conduit 10 is connected to the jet nozzle 7.

[0008] The branch flow path 12 has an end open to the atmosphere, and is provided so as to point further upward from the middle part of the jet water conduit 10, specifically, from above near the height of the water sealing surface of the toilet bowl 1. This is to prevent the water in the jet water conduit 10 from entering the branch channel 12 before water supply, and to reduce the amount of air that does not move to the branch channel 12 side. The volume (length) of this branch channel 12 is approximately the total amount of air that was in the jet water conduit 10 when the pressure on the jet nozzle side and the pressure on the branch channel side became equal at the start of jet water supply. It is assumed that the flow rate is such that the flow path can be moved toward the branch flow path 12 side. In this embodiment, the branch flow path 12 stands up vertically from the jet water conduit 10, but the branch flow path 12 is not limited to this as long as it is directed upward.

In this embodiment, the check valve 13 includes:
Although a float-type type having a small specific gravity and operating sensitively due to a slight pressure difference is used, the present invention is not limited to this type, and the valve mechanism 11 is switched to the jet water conduit 10 side to allow a certain amount of air to escape when jet water supply is started. The jet water conduit 10 of the valve mechanism 11 may also be a slow-moving one.
Even if the jet water conduit 10 is opened to the atmosphere when the side is closed and jet water supply stops (normally open), the jet water conduit 10 is isolated from the atmosphere (normally closed).
It may be. Jet water pipe 10 even when normally closed
An air gap can be obtained within the backflow prevention valve 13 because negative pressure is generated within the jet water conduit 10 when the jet water conduit 10 side of the valve mechanism 11 is closed.
This is because the opening causes air to be introduced into the jet water conduit 10. Therefore, no water hammer occurs in either case, and a reliable air gap can be obtained between the valve mechanism and the water seal.

The height position at which the check valve 13 is provided is such that the valve mechanism 11 is arranged to ensure that an air gap is created within the jet water pipe 10 when the jet water pipe 10 side of the valve mechanism 11 is closed. Ideally, the height should be higher than the predetermined position, but this is not necessarily the case for the reasons mentioned above.

The enlarged view of FIG. 2 shows that the jet water conduit 10 side of the valve mechanism 11 is closed and no jet water is being supplied. In this state, the control device 15 receives the activation signal from the operating section 14, switches the valve mechanism 11 in a predetermined order and time, and controls the rim passageway 1.
7 and the jet nozzle 7 to clean the toilet bowl 1.

When the valve mechanism 11 is switched to the jet nozzle 7 side and cleaning water is supplied to the jet water conduit 10, the air in the jet water conduit 10 first moves to the branch flow path 12. This is the water pipe 1 for the air jet.
This is because the resistance encountered when moving toward the branch flow path 12 is lower than the resistance encountered when pushing the water in the jet nozzle 7 direction. In the non-return valve 13, the float 19 rises due to this air flow and closes the gap with the upper wall 20, but the air has a pressure on the jet nozzle 7 side in the jet water conduit pipe 10 and a pressure on the branch flow path 12 side. branch flow path 12 until they become equal.
Keep moving to the side.

After almost all of the air in the jet water conduit 10 has moved to the branch flow path 12 side in this way, the cleaning water begins to flow toward the jet nozzle 7. Therefore, since the air does not flow into the jet nozzle 7, the air is not vigorously discharged from the jet injection hole 8.

[0014]

Effects of the Invention As explained above, in the jet water supply device for a toilet according to the present invention, at the start of jet water supply, after the air moves to the branch flow path side, the wash water flows toward the jet nozzle, so that the air is It doesn't flow into the nozzle. Therefore, since air is not forcefully discharged from the jet nozzle, no noise is generated.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a toilet bowl equipped with a jet water supply device according to the present invention.

FIG. 2 is an enlarged view of a jet water supply device for a toilet according to the present invention.

FIG. 3 is a sectional view of a toilet bowl equipped with a conventional jet water supply device.

[Explanation of symbols]

1... Toilet bowl, 2... Partition wall, 3... Bowl part, 4... Trap drain, 5... Inlet, 6... Outlet, 7... Jet nozzle, 8
...Jet injection hole, 9...Jet water supply device, 10...Jet water conduit pipe, 11...Valve mechanism, 12...Branch flow path, 13
...Return prevention valve, 14...Operation unit, 15...Control device, 16...
Water supply pipe, 17... Rim water passage, 18... Rim water supply chamber, 19...
Float, 20... Upper wall, 21... Weir.

Claims (2)

[Claims] 1. A jet water supply device for a toilet, comprising a water conduit for supplying jet wash water, the water conduit being connected to a valve mechanism that controls the supply of jet wash water, wherein the water conduit is sealed to the toilet bowl. A jet water supply device for a toilet bowl, characterized in that a flow path is branched from above near the height, the end of the branch flow path is open to the atmosphere, and a backflow prevention valve is provided at a predetermined distance from the branch portion. 2. The jet water supply device for a toilet bowl according to claim 1, wherein the branch flow path is formed upward from the branch portion.